Near the stage 21, this beautiful natural park includes the high Chalamy river valley, in the municipality of Champdepraz, and the valley of Dondena, in the territory of Champorcher.
Mont Mars natural reserve
In Fontainemore (stage 2) protected area the balance between man and nature has been achieved. Explore it on foot and let yourself be conquered by its crystalline lakes.
Villa lake
The nature reserve at Challand-Saint-Victor: an oasis of quietness that everyone can reach along stage 6. Near the lake there are the ruins of the of Villa castle, the oldest manor house of the noble Challant family.
Côte de Gargantua
In Gressan, along stage 18, the nature reserve protects a particular steppe environment that extends over a promontory of glacial origin.